Planoqra



E. V. PARKER.

VALVE OPERATING FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JUNE 16. 1919.

1,817,310. Patented Sept. 30, 1919.

2 SHEETSSHEET I.

amoewtoz [mast Vflvker TI 5 couvmam wmuammtco' WASHINGTON, Ix c E. V. PARKER.

VAI:VE OPERATING FOR INTERNAL COMBUSTION ENGINES. APPNICATION FILED JUNE I6. 1919.

1,317,310. Patented Sept. 30, 1919.

2 SHEETS-SHEET 2- auto Luau THE COLUMBIA PLANOGRAPH (20., WASHINGTON, D. c.

ERNEST-y. PARKER, F TACOMA,..WASHIINY'G1TQN.=;

VALVE-OPERATING ron INTERNAL-COMBUSTION..EKGINESM Specification of LcttersCPatent.

Patented Sept. 39, 1919,

Application filed June 16, 1919.. Serial No. 304,441.

of the city of Tacoma, county of Pierce,

State, of Washington, have invented certain new .anduseful Improvements in Valve-Operating for Internal-Combustion Engines, of which the following is a specification.

Myinvention relates to internal combustion engines, and meanswherieby the valve mechanism, is operated, especially .in such engines, as. employ air under pressure for starting.. The type of engine .to which. this mechanism is particularly adapted-is a type whichis ordinarily spoken ofv as Diesel or semi-Diesel.

The. object of my invention, is to pro.' vide a simple, reliable. mechanism, which mav be .controlledfby the simple movement offshifting a lever into various positions, and which, by sodoing, will becaused to operate the valves after. the manner required while running, or. into such position asiszrequired when starting underi air, or. tothroWQthe valve] entirely out ofaction,

' The. features of this deyice whichl deem to be new and upon which I desire to obtain patent will be hereinafter described and then particularly. defined by. the claims; I

In, the accompanying] drawings. I have shown in asimple form of. construction the manner. oi? installing. and operating my. .inventionw I *Figurel shows the cylinderof. an engine and the mechanisms employed in connection with my device for operating. the. valves thereof. i

Fig. .21showsa front elevation of the -engine, cylinder, together with the valveiopcrating mechanisms y f Fig. .3 isa plan view;of the valve operating mechanisms and their relations. to 7 the cylinders V Insenginesof. the .type referred to it is customarvto employ air, which has been previously compressed and storediin a tank, as the means for starting the operation of the engine. Whenthisis done theengine op.- erates in ,the same manner as would; i an ordinary steam-.oncomp'ressed'. air engine,, This manner ofoperation. is,.of.course,.'cut ofilas so o ri as the engine has been started and, in mechanisms messes en s use of air in starting maybe applied to a. per; tion only of the, cylinders, where theengine is one having several cylinders; i i i The particular construction of thefjengine cylinder and piston of the valvethereof is immaterial to my present inventions. I have, therefore, indicated, theseparts only in. a typ al manner, e s m ibei g. i e ed to r pr en y ypepti ls ti n h h may be employed for. these partsl, There would beemployed, a series of valves}, the numoer depending, to a certain...eX,tent,.upon

other features; the ,manner for'factuating I these, is also largely immaterial. 7

As hereinshown, the ,:valve is operated through the medium of a lever...l0., which lever is pivoted in'any suitable .maIinQK,

upon, a bracket 11 'andfthisuis operated through the intervention. of a linkoi'lrod 2. The" number-of levers 10 androds2 em.- ployed, depend upon the nu nbenofyalves which are required. for any particularfcyl'inden. The mechanisms herein describedfcan also be, applied 7 to as many as it maybe I desired.

The. links or ,rods 1 2 are. movedlengthwise thereof underthe normal action. ofjoperating the valves. Th'ey,are independent ofjgeach v other. in their. movement. in this dir'ectio'n. They. are, however, connected ,infsuch a manner that they must move together so far as movement transversely of their. length,- this beingthe movement which is given themin adjusting them for..op.eration..un der different. conditions, for instance, while running, while standing and while starting, for. each otthese} purposes they. occupy a diflerent position transverse ly of. their. length. l v

Each of these rods orlinks2 has secured to the end thereofia head 3, and thishead has mounted ;thereon, either,one or two cam rollers, the number. varying with the d fferent heads. [In Fig...2,wherein .all of these flinks i are shown side. by. side, I have the individuallinks by. the. reference characters 20, 21,22, and 23-. The, link QOisQthe one which isusedto control the exhaust valyes.

The link 21 is the one 'whichis usedto ,cen-

trol the .fuel injection, .22 controls the starting airand 23 the air Suotion whicllipl' flgle the air charge: for. the. enginecylinderl If this. devic bel pp f dr a nsin 9 "the-ty e negate. stages fame-b means of a carbureter, that is, wherein the fuel and the air. are introduced together, then 7 one ofthese valve operating mechanisms may be omitted, in which case the fuel 'inj ection and the air supply forthecharge may be operated from the same link.

The heads 31 sauna 33, being thosewhich control respectively the fuel injection startingair andathe' air suction, or the supply for the charge, are each supplied with a sin gle cam roller. These heads, as illustrated in F ig, 2, are differentiated for the differem; 1 links by the .reference' characters 30,

31, 32 and -The heads, 31, 32 and 33 are alike. in having a single cam roller4', therein. The head 30, however, has a plurality of cam rollers located in different positions transversely of the length of the link 2. 'As ,herein shown-they are provided with one roller 40 in the center of its width, and two rollers 41 located at each side ofthe center roller.

The two rollers 41 'are, howe ver, to be considered as one, as they function alike.

All of the heads 3 are connected with a common operating mechanism for adjustment in thei direction transversely of the length of the links 3., Themeansshown for adjusting this consist in connecting a link 5 to each head, which link extends substantially at right anglesjwith thelinks 2, and connecting all of these links 5 with arod 50 carried by a yoke 51' which yoke is secured to a shaft 52, which shaft is rocked by any convenient and suitable means, as for in stance,'by a crank arm 53, which crank arm may be extended so as to form a lever, or

I may be operated through alink 54, from an suitable position and by any suitable mechanisnn; Thev essential feature is that allof the heads 3 "be moved laterally together; any suitable mechanism for securing this resultmay be employed.

All of the cam rollers carriedby these heads, excepting'that carried by the head which operates the starting air, and one'set of thosecarried by the exhaust operating head, arelocated in alinement, these being 7 the rollers which are shown at thelright hand side of the head i'nFig. 1. The roller which is carried byLthe head which operates the startingair, and one .set, 41 o f.those carried by the exhaust operating head, are placed in alinement'parallel with the other,

but moved to one side thereof, these being the rollers which are shown at the left hand in Fig. 1 and which are differentiated by thereference character 41; These heads are shown by'full lines in the. position .which 'ning operation of-the engine. .111 dotted lines inFig; 1 they'fare shown in the position p ,which they would; occupy, when. the enginewa's'stopped. In an intermediateposition,

they would occupyiduring the normal runbeing the position wh'e'reinthe rollers 41 were alined with the center of the shaft 6, the parts are in position forstarting the engine by the use of compressed air.

The shaft 6 is turned in any suitable man nerfrom the engine shaft. For a four-cycle engine this shaft would turn at half the speed of'the engine shaft.- Upon this shaft are provided a series of cams for engagement with therollers 4 and 41. Such of theserollers as are employed while the engine is running have a. singlelobe, as 60. Those cams which timing for the reversal.- The means whichI have shown consists in providing the shaft 6 with a duplicate set of cams and then shifting the shaft; or at least a member mounted thereon to which the cams are secured, lengthwise of the shaft enough to position the two sets of cams for alternately engaging with the cam rollers.

' by the cams will be operated under different As shown in Fig. 2,'the cams which have 7 been differentiated by the character 61 are employed for engagement with the cam roller 40, the cams 63 are employed for engaging with the cam roller connected by head 31, the cams .64 for engaging with the roller carried by .the head 32 and cam 65 .for

engaging; with the 'rollercarried 'by the head33.

If the shaft, or the member carrying these cams, be shifted to the right a distance corresponding with the separation of the corresponding cams of. any set, these cams will alternate into position to engage with the cam rollers, and the valves will thus be operated in a manner for turning the engine in V opposite directions. Any means desired and found suitable for shifting of this shaft ma be employed 1 a 1 The position. of these parts shownby 'dotted lines in Fig. 1is that occupied when H the engine is stopped. In starting,lthe1con'- "trolling lever is shifted so asto placethe outer set of rollers, as 41, into positionfor engagement by the cams on shaft 6. This will operate only the air-starting valves-land the exhaust valves. .When the eng'meis .under way, the lever is shifted so as to place these headsin the last or. final position which is shown by full lines in Fig. 1.; In this position the air startingvalves will not beoperatedj The exhaust valves will, how- "ever, be ioperated,*as this head 30 hastwo sets of rollers 40 and'41p: The air starting head, being the head 3%has but'one roller,

but this is alined with the roller 41, and consequently, is not in position to be operated by the cams when the heads are in the normal running position.

What I claim as my invention is:

1. A valve operating gear for internal combustion engines comprising fuel injection, air supply, exhaust and starting air valves, a separate actuating head for each of said valves, said heads being connected to be shifted together between neutral and 0perative positions, a 'rotative shaft having cams thereon for operating all of said heads, the exhaust, air suction and fuel supply heads having cam rollers which are alined in the direction of the length of the shaft, and the air starting and exhaust heads having cam rollers. offset to one side in the same direction from the other cam rollers.

2. A valve operating mechanism for internal combustion engines comprising fuel supply, exhaust and starting air heads carried by pivoted links to have a laterally swinging movement foradjustment between working and neutral positions, said heads all being connected for adjustment together, a shaft having cams for actuating said heads the starting air and the exhaust heads having cam rollers alined in thedirection of the length of the shaft, and the fuel supply and exhaust heads having cam rollers alined with the direction of the shaft and laterally offset from the other cam rollers.

3. A valve operating mechanism for internal combustion engines comprising starting air, fuel supply and exhaust heads, links connected each with its respective head, means for swinging said heads laterally of their operation movement for adjusting them between working and neutral positions, a shaft having two sets of cams designed for reverse operation of the engine, means for shifting said cams lengthwise of the shaft to change from one set to the other, the exhaust head having two cam rollers oifset in the direction of the adjustment movement of said heads, the air starting head having a cam roller alined with one of the rollers on the exhaust head and the fuel supply head having a cam roller alined with the other roller of the exhaust head, the cams engaging the air starting roller and alined roller of the exhaust head having twice the number of lobes as the cams which engage the other rollers.

Signed at Tacoma, Washington this 28th day of May, 1919.

ERNEST V. PARKER.

copiel of this pltent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

